[New] SO-ARM101 Low-Cost AI Arm Servo Motor Kit for LeRobot (Without 3D Printed Parts)

Build your own imitation learning robotic arm with the SO-ARM101! Designed for LeRobot and Hugging Face projects, these kits include servo motors, adapter board, and cables. Open-source, low-cost, and DIY-friendly—perfect for robotics enthusiasts and developers. Start prototyping today with our comprehensive resources!

What’s news：

• Wiring optimization: Compared to SO-ARM100, SO-ARM101 features improved wiring that prevents disconnection issues previously seen at joint 3. The new wiring design also no longer limits the range of motion of the joints.
• Different gear ratios for the leader arm: The leader arm now uses motors with optimized gear ratios, improving performance and eliminating the need for external gearboxes.
• New functionality support: The leader arm can now follow the follower arm in real-time, which is crucial for the upcoming reinforcement learning (RL) policy, where a human can intervene and correct the robot’s actions.

Features of SO-ARM 10x Sereies:

1. 1. Open-source and low-cost: It is an open-source, low-cost robotic arm solution from TheRobotStudio.
   2. Integration with LeRobot: Designed for integration with LeRobot platform which offers PyTorch models, datasets and tools for reinforcement learning and imitation learning for real-world robotics applications (including data collection, simulation, training and deployment).
   3. Abundant learning resources: Provides comprehensive open-source learning resources like assembly and calibration guides, and tutorials for testing, data collection, training and deployment to assist users in quickly getting started and developing robotic applications.
   4. Compatible with Nvidia: Deploy this arm kit with reComputer Mini J4012 Orin NX 16 GB.

SO-ARM10x Low-Cost AI Arm Kit and Arm Kit Pro
Type	SO-ARM100	SO-ARM101
Arm Kit	Arm Kit Pro	Arm Kit	Arm Kit Pro
Leader Arm	12x (7.4V) 1:345 gear ratio motors for all joints	12x (12V) 1:345 gear ratio motors for all joints	1x (7.4V) 1:345 gear ratio motor for No.2 joint
2x (7.4V) 1:191 gear ratio motors for No.1 and No.3 joints
3x (7.4V) 1:145 gear ratio motors for No.4, No.5 joints and the No.6 gripper
Follower Arm	Same as SO-ARM100	Same as SO-ARM100
Power Supply	5.5mm*2.1mm DC 5V4A	5.5mm*2.1mm DC 12V2A	5.5mm*2.1mm DC 5V4A	5.5mm*2.1mm DC 12V2A For Follower Arm
5.5mm*2.1mm DC 5V4A For Leader Arm
Angle sensor	12-bit magnetic encoder
Recommended Operating Temperature Range	0℃～40℃
Communication Method	UART
Control Method	PC

 

Imitation learning and Reinforcement learning

The LeRobot framework is compatible with the SO-ARM10x robotic arm. It provides complete data collection, training, and deployment for teaching the robotic arm, and also has a comprehensive simulation platform. On the Nvidia Jetson edge device, it’s easy and quick to train a customized robotic arm to complete grasping and placing tasks. For detailed tutorials, please refer to: LeRobot – NVIDIA Jetson AI Lab

STS3215 Servo Motor Datasheet

Finedtune 3D printed parts files

Original SO-ARM100 3D printed parts

Servo Adaptor Board for Seeed Studio XIAO Datasheet

reComputer J301x Datasheet

reComputer J401X Datasheet

7.4v STS3215 Servo Motor 1:345 gear rate	x7
7.4v STS3215 Servo Motor 1:191 gear rate	x2
7.4v STS3215 Servo Motor 1:145 gear rate	x3
Servo Adaptor Board for Seeed Studio XIAO	x2
Stud	x8
Screw	x8
5V Power Supply Cable (Multiple head)	x2
USB-C Cable	x2
DC Power Pigtail Cable	x2

HSCODE	8501109990
USHSCODE	8501104080
UPC
EUHSCODE	8501109390
COO	CHINA